Okuma Mill-Turn / Multi-Tasking Machines

Okuma MULTUS B200II

Est. $350,000 - $500,000 Specs verified 2026-08-09 · okuma.co.jp Updated 2026-10-03

Image: d30jruhmdicmo0.cloudfront.net, Okuma

Key Specifications

Tool Capacity

20 tools

Rapid Traverse

40/26 m/min (1,575/1,024 ipm), X,Z/Y

standard chuck size

6 in

max machining diameter

600 mm (23.62 in)

max work length

550 / 750 mm (21.65 / 29.53 in)

spindle speed

50~6,000 min⁻¹ [45~5,000 min⁻¹ optional]

How much does the Okuma MULTUS B200II cost?

Estimated price range

Est.$350,000 - $500,000

Our best estimate for a mill-turn / multi-tasking machine in this class — not a quote from Okuma. Configuration moves it a long way.

Overview

The Okuma MULTUS B200II is a multitasking mill-turn machine with a 6 in standard chuck, a maximum machining diameter of 600 mm (23.62 in) and a main spindle that runs 50~6,000 min⁻¹. Work length is listed as 550 / 750 mm (21.65 / 29.53 in).

A 600 mm machining diameter over a 6 in chuck says a lot about the intended parts. The chuck and the 11/7.5 kW (15/10 hp) PREX spindle motor, rated 20 min/cont, are sized for bar and small chucked work, while the large swing gives room for milling tools to reach around a part and for fixtures or odd-shaped workpieces to clear. The Multus B250II shares the 600 mm (23.62 in) diameter but lists 22/15 kW (30/20 hp), twice the motor rating, so the choice between them is about how hard the turning cuts are, not how big the part is.

Two options sit in brackets: a 45~5,000 min⁻¹ speed range and a JIS A2-6 spindle nose in place of the standard Ø140 flat nose. The table does not say that they come as a pair, though a larger nose with a lower top speed is the usual pattern, so confirm what a quoted machine has. Rapid traverse is 40 m/min (1,575 ipm) in X and Z and 26 m/min (1,024 ipm) in Y, and the magazine holds 20 tools.

Okuma lists two sets of machine dimensions, 3,080 × 2,210 × 2,582 mm (121.26 × 87.01 × 101.65 in) and 3,620 × 2,210 × 2,582 mm (142.52 × 87.01 × 101.65 in), which lines up with the two work lengths: the footprint grows in length and keeps its width and height. A W specification with a second spindle is also listed, for parts that need both ends machined without a manual flip.

Full Specifications

Parameter	Value
Standard Chuck Size	6 in
Max Machining Diameter	600 mm (23.62 in)
Max Work Length	550 / 750 mm (21.65 / 29.53 in)
Spindle Speed	50~6,000 min⁻¹ [45~5,000 min⁻¹ optional]
Spindle Nose	Ø140 flat [JIS A2-6]
Spindle Motor	PREX 11/7.5 kW (15/10 hp), 20 min/cont
Rapid Traverse Rate	40/26 m/min (1,575/1,024 ipm), X,Z/Y
Tool Capacity	20 tools
Machine Dimensions	3,080 × 2,210 × 2,582 mm (121.26 × 87.01 × 101.65 in); 3,620 × 2,210 × 2,582 mm (142.52 × 87.01 × 101.65 in)
Spec Extension	W (second-spindle specification)

Specifications sourced from okuma.co.jp — verified 2026-08-09

Strengths & Limitations

Strengths

Main spindle speed of 50~6,000 min⁻¹ as standard, suited to small-diameter bar and chucked parts
Maximum machining diameter of 600 mm (23.62 in) around a 6 in chuck leaves clearance for milling on awkward shapes
Two work lengths, 550 / 750 mm (21.65 / 29.53 in), with the footprint growing only in length
W specification adds a second spindle for machining both ends in one cycle
Rapid traverse of 40 m/min (1,575 ipm) in X and Z

Limitations

The 11/7.5 kW (15/10 hp) PREX motor is half the 22/15 kW (30/20 hp) listed for the Multus B250II, so heavy turning cuts are limited
The magazine holds 20 tools, which fills quickly on parts that mix turning and milling
Y rapid is 26 m/min (1,024 ipm), slower than the 40 m/min (1,575 ipm) of X and Z
The JIS A2-6 nose and the 45~5,000 min⁻¹ range are options, and no milling spindle or B-axis figures are listed

Best For

Small shafts and bar parts turned and milled in one setup Complex parts that need the 600 mm (23.62 in) machining diameter for tool clearance Work up to 550 or 750 mm long, depending on the version Two-ended parts when the W second-spindle specification is ordered

Frequently Asked Questions

01 What chuck and spindle does the MULTUS B200II have?

A 6 in standard chuck on a spindle that runs 50~6,000 min⁻¹, with a 45~5,000 min⁻¹ range listed as an option. The standard nose is Ø140 flat and JIS A2-6 is the bracketed alternative. The motor is a PREX type rated 11/7.5 kW (15/10 hp) at 20 min and continuous.

02 How long a part can the MULTUS B200II take?

Okuma lists two work lengths, 550 mm (21.65 in) and 750 mm (29.53 in). Two sets of machine dimensions are listed as well: 3,080 × 2,210 × 2,582 mm and 3,620 × 2,210 × 2,582 mm, so only the length of the footprint changes.

03 What does the W specification mean on this machine?

The table lists W as a second-spindle specification. A second spindle lets the part be handed over and finished on its back face in the same cycle. No speed, power or chuck figures for that spindle are in the listed rows, so ask Okuma for them.

04 How does the MULTUS B200II compare with the MULTUS B300II?

The MULTUS B300II lists an 8 in standard chuck, a 630 mm (24.80 in) maximum turning diameter and a 45–5,000 rpm spindle with a JIS A2-6 nose as standard. The MULTUS B200II has a 6 in chuck, 600 mm (23.62 in) and 50~6,000 min⁻¹. Both list 20 tools and rapids of 40/26 m/min (1,575/1,024 ipm).